Unable to change directory

When trying to click on a remote folder that has not previously been opened I get the message

[10:33:56] 550 Can't change directory to /bvaf.org.uk/htdocs/records: No such file or directory

This seems to occur when I have opened an htdocs subdirectory then changed to htdocs and then tried to open a different subdirectory of the same htdocs. That is certainly what happened on this occasion. To get round the problem I have to disconnect and reconnect the remote browser.

I admit this could be a problem with the remote server, so I need to eliminate one of them.

Yep looks like a server problem to me.